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Sebastian Mojica

Sebastian Mojica

Bilingual Data Analyst & AI Trainer | Python & Machine Learning

Colombia flagBogotá, Colombia
$15.00/hrEntry LevelLabelboxLabelimgRoboflow

Key Skills

Software

LabelboxLabelbox
LabelImgLabelImg
RoboflowRoboflow

Top Subject Matter

No subject matter listed

Top Data Types

AudioAudio
ImageImage
TextText

Top Task Types

Bounding Box
Classification
Evaluation Rating

Freelancer Overview

I have technical experience in AI training using Roboflow, where I trained computer vision models to classify handwritten signatures as genuine or forged. My work involved preparing and annotating datasets, applying bounding box labeling, configuring training parameters, and running multiple iterations to optimize model accuracy. Through this project, I gained hands-on practice with the AI training pipeline, including dataset curation, model training, and evaluation. This allowed me to understand the direct relationship between labeling quality and model performance, while building solid skills in computer vision, classification, and supervised learning workflows.

Entry LevelEnglishSpanish

Labeling Experience

Roboflow

Signature Verification with Roboflow – Image Classification & Annotation

RoboflowImageBounding BoxClassification
In this project, I used Roboflow to train computer vision models for signature verification, distinguishing between genuine and forged handwritten signatures. My work included preparing and labeling image datasets with bounding boxes and classification tags, configuring training parameters, and iterating on models to improve detection accuracy. The project involved curating a balanced dataset of signatures, applying consistent annotation standards, and testing model iterations to evaluate performance. I adhered to quality measures such as clear labeling criteria and dataset versioning to ensure reproducibility. This hands-on project allowed me to strengthen my expertise in data labeling, image classification, and model evaluation, while applying AI training techniques to a real-world use case in document validation and fraud prevention.

In this project, I used Roboflow to train computer vision models for signature verification, distinguishing between genuine and forged handwritten signatures. My work included preparing and labeling image datasets with bounding boxes and classification tags, configuring training parameters, and iterating on models to improve detection accuracy. The project involved curating a balanced dataset of signatures, applying consistent annotation standards, and testing model iterations to evaluate performance. I adhered to quality measures such as clear labeling criteria and dataset versioning to ensure reproducibility. This hands-on project allowed me to strengthen my expertise in data labeling, image classification, and model evaluation, while applying AI training techniques to a real-world use case in document validation and fraud prevention.

2024 - 2024

Education

U

University of Bogotá Jorge Tadeo Lozano

Bachelor, Computational Modeling and Simulation

Bachelor
2023 - 2025
U

University of Bogotá Jorge Tadeo Lozano

Bachelor, Systems Engineering

Bachelor
2021 - 2025

Work History

S

Seguros Bolivar S.A

University Intern

Bogotá
2025 - Present